<html>
<head>
    <title>Parse url string</title>
</head>
<body>
<form action="" method="post">
    <textarea name="value" rows="5" cols="50"><?php echo @$_POST['value'];?></textarea>
    <br>
    <input type="submit" value="Submit">
</form>

<?php
    if (@$_POST['value']) {
        parse_str($_POST['value'], $var);
        JBDump($var, 0, 'parsed url params');
    }
?>

</body>
</html>

